128519

Properties

Appears in sequences

• Numbers whose least quadratic nonresidue (A020649) is 23.at n=16A025028
• Odd numbers k for which 23 is the smallest positive i with Jacobi symbol J(i,k) != 1.at n=22A112079
• Primes p such that p+2, p*(p+2) + 12 and p*(p+2) + 14 are also prime.at n=14A130736
• a(1) = 1; thereafter a(n) = a(n-1) + d_1^1 + d_2^2 + d_3^3 + ..., where d_1 d_2 d_3 ... is the decimal expansion of a(n-1).at n=25A263535
• a(n) is the smallest prime p such that tau(p+1) = 2^n.at n=6A343020
• Prime numbersat n=12034